Final answer:
When on beta blockers, the Rate of Perceived Exertion (RPE) during vigorous activities typically increases as these medications prevent the heart rate and blood pressure from rising to meet the demands of the activity.
Step-by-step explanation:
The question relates to the effect of beta blockers on Rate of Perceived Exertion (RPE) during vigorous activities. Beta blockers are medications that reduce your blood pressure. They work by blocking the effects of the hormone epinephrine, also known as adrenaline. Beta blockers slow down your heart rate and reduce the force of your heart's contractions, leading to a decrease in blood pressure. When engaging in vigorous activities, the body typically responds with an increase in heart rate and blood pressure to meet the heightened demand for oxygen and nutrients. However, when an individual is on beta blockers, the typical response in heart rate and blood pressure is blunted.
Therefore, the Rate of Perceived Exertion (RPE) typically increases because the person may find the activity to be more strenuous due to the body's restricted ability to respond to the increased demand for oxygen and energy. This inability to increase heart rate and blood pressure adequately can make the activity feel harder than it would without the medication.